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Illinois Withholding Calculator 2026

Estimate your Illinois state and federal income tax withholding, see which form to file (Form IL-W-4), and get the exact W-4 line entries to break even.

Updated for tax year 2026 · Official source: irs.gov

Step 1

Filing status & income

Your main job
$
Step 3

Dependents

Step 4

Other adjustments (optional)

$
$
$

Projected result at filing

$0

You're on track to break even for tax year 2026

Total annual income
$60,000
Taxable income (after deductions)
$43,900
Projected federal tax for the year
$5,020
Projected federal withholding
$5,020
Difference
$0
Recommendation

Your W-4 is on track — projected withholding closely matches your projected tax, so no changes are needed to break even.

Illinois state withholding

Form IL-W-4
Estimated state tax for the year
$2,825
Per paycheck
$2,825.21
Effective state rate
4.71%
  • •Illinois applies a flat 4.95% rate. It has no standard deduction; personal exemption allowances reduce taxable wages.

Compare scenarios

See how extra withholding on Step 4(c) changes your year-end result and take-home pay.

ScenarioCurrent W-4As enteredRecommendedNo changeYour what-if+$0/check on 4(c)
Annual withholding$5,020$5,020$5,020
Withheld per paycheck$5,020.00$5,020.00$5,020.00
Year-end resultBreak evenBreak evenBreak even

Estimates for tax year 2026 based on IRS Publication 15-T and the 2026 federal tax tables. This is not tax advice — verify with the IRS or a tax professional before filing your W-4.

How Illinois state tax withholding works

Illinois taxes wage income, so your employer withholds Illinois income tax from each paycheck in addition to federal tax. You tell your employer how much to withhold on Form IL-W-4 (Employee's Illinois Withholding Allowance Certificate), the state’s counterpart to the federal Form W-4.

For 2026, Illinois applies a flat 4.95% rate to your taxable wages and personal/dependent exemptions.

Enter your pay above to see your estimated Illinois withholding per paycheck and per year, alongside your federal withholding and the exact W-4 entries.

Illinois vs. federal withholding

Your Illinois and federal withholding are figured separately. Federal withholding follows the IRS Publication 15-T tables and your Form W-4; Illinois withholding follows the state’s own rates and your Form IL-W-4. Getting one right doesn’t guarantee the other — this calculator handles both so you don’t owe a surprise bill to either the IRS or Illinois.

Important Illinois notes

  • Illinois applies a flat 4.95% rate. It has no standard deduction; personal exemption allowances reduce taxable wages.

Frequently asked questions

Sources & disclaimer

Federal figures use the 2026 IRS Publication 15-T. Illinois withholding is based on the 2026 Illinois income-tax structure; confirm exact figures and complete Form IL-W-4 at the tax.illinois.gov website.

This tool provides estimates for educational purposes and is not tax advice. State withholding is modeled from the state’s income-tax rules and may differ from the exact wage-bracket tables your employer uses. Verify against your pay stub and consult a qualified tax professional before submitting your W-4 or Form IL-W-4.